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We specialize（） all kinds of metals and are always ready to buy in large quantities.

We specialize（） all kinds of metals and are always ready to buy in large quantities.
A、in
B、from
C、on
D、at
正确答案：A

上一条：We trust you will look（） the matter without delay upon receiving the data concerning thedamage.

下一条：（）you fulfill the terms of the L/C，we will accept the drafts drawn under this credit.